Temperature-exchanging apparatus.



una. 704,318. Patented my. l5, |902'.

J. .DESMAROUX- vTEMPERATURE EXCHANGING APPARATUS. (Applicatxfmnv filedDec'. 8, 190,1.) (llo Model.) 3 Sheets-Sheet .L

Eff/- fn nen 767/ my @1x I l l l f i LU Lm H7: u u u u mfr/mmf@m7154170# W A cfosyaebmarazlx j m41/ By No. 704,818. Patented July l5,V1902-.

J. DESMARUUX. TEMPERATURE Exc-HANRTNR APPARATUS.`

(Application med Dec. e, 1901.)

'rus mams rcrns co.. PuoTDMTHo., wAsHmTON. D. u

(No Model.)

No. 704,8la. v Patented muy-15, 1902-;

.l. uEsMAnoux. Y

TEMPERATURE EX-CHANG'ING APPARATUS.

(Application'med Dee. e, 1901*.)

A SShQetS-Sheet 3.

(No lous.)

UNITED STATES f PirrsnrH OFFICE '.IosEPH DnsMARoUx, oF PARIS, FRAN-on,AssIeNoRfro COMPAGNIE GNRALE ARoI-IYDRAULIQUE, oF PARIS, FRANCE.

SPECIFICATION forming part of Letters PatentlNo. 704,818, dated July 15,1902. Application led December 6, 19011 Serial No; 84,907. (No model.)

To all whom t may concern:

Be it known that I, JOSEPH DEsMARoUx,

machine -maker, of Alle Rue des Plantes, in?

the city of Paris, Republic of France,have

invented Improvements in Temperature-Ex' changing Apparatus, of whichthe' following is a full, clear, and exact description. c

The object of this inventionlis an improved temperature-exchangingapparatus Y fori permitting two fluids or liquids to: exchangecom-vpletely their temperatures, )and chiefly Adesigned to bring back to thenormal temperature water which has been brought tofan ele-V vatedtemperature-e. g., 100o oentigradefduring a suitable time todestroyallthe germs that it may contain.

to the water which is to be sterilized. Y

The improved apparatus consists, essen? tially, in two adjacent passagesformed bythe spiral coiling or rolling of two sheets"of `m etal` and bythe interposition between these metal sheets of two spiral metal bandsthe width of g which corresponds to that of the passages,v

these spiral bands being respectively brazed to the opposite borders ofthe metal sheets,VY

so as to close completely each passage on one face thereof and so thatthe free openings of these two passages are on two opposite faces of theapparatus.

The two faces of the apparatus are each closed byaplate with a disk ofcaoutchouc or india-rubber interposed at the joint and serving to insurea fluid-tight closure of the free openings of the two passages.

The special arrangement of the improved apparatus insures an absoluteexchange of the temperatures of the two'liquids, permits easy cleaningand inspection, and renders impossible any communication between the twoliquids.

In order that the invention may be readily understood, the improvedapparatus is shown in the accompanying drawings in principle, but by wayof example only.

Figure 1 shows the apparatus in elevation. Fig. 2 is a vertical sectionof the apparatus, the plates being removed. Figs. 3, 4L, and 5 arehorizontal sections on the lines A B, C D, and E F,respectively.

l Inlthevligures like letters of reference indicate the same parts.

,As showninithedrawings, the improved apparatus is formedby two sheets ab of any lsuitable metal-suchas copper, brass, galvanizedf or tinnedjiron, &c.-xed onto a core c at twodiametrically oppositegenerating-lines on the said coreqand rolled around this core, leavingbetween them a free space having, for example, a` width of about fivemillimetersand the ends of these sheets of metal are soldered, as shownin Figs. 3, 4, and 5, onto the casing d of 'the apparatus. These twosheets of meta-l a b thus rolled up form the two adjacent passages e f.Between these two sheets 'a b .of metal'are interposed two vmetal bands,gli, rolled spirally at the sametimeas the sheets of metal and brazedontothe opposite borders or edges of the said'sheets,sothat each passageis completely lclo'sedonbone'side and open at the other and so that thefree openings of these two passages 'are respectively on the twoopposite faces of the apparatus.

The apparatus is closed on its two faces by lplates t', disks j ofindia-rubber or other suitable material being interposed at the jointsto insure a duid-tight closure of the free openings of the two passages.Each plate thus only insures the closure of one passage. The two platesvl are connected together by bolts lo.

The entrance and exit of the two liquids which are to exchange theirtemperatures by their passage through the apparatus is eected for theone part by the openings lm, which communicate with the central spaces no, into which respectively open the twopassages c f, andV for the otherpartby the two tubular pieces p Q on the external casing d at the end ofeach of these passages. One of the liquidsthe cold liquid, for example,the water to be sterilized-enters through the tubular piece p,circulates in the direction of the arrows drawn in full lines from theperiphery toward the center, and goes out through the opening l. On theother hand, the second liquid-the sterilized water to be cooled, forexampleenters through the opening lm, circulates in the oppositedirection in the direction of the IOO arrows drawn in chain lines fromthe center toward the periphery, and goes out of the apparatus throughthe tubular piece q. The sterilized water is thus cooled completely in aclosed vessel and issues from the apparatus at a temperature near tothat at which the water to be sterilized enters, and this latter goesout at the temperature at which the sterilized water has entered theapparatus. This arrangement insures an absolute exchange of temperaturebetween the two fluids. Y Moreover, there can never be any communicationbetween the two liquids even if the joints 7' of the apparatus weredefective, since if a leak is produced the liquid cannot enter theadjacent spiral passage, since the latter is completely closed by abrazed metal band. Thus it need never be feared with this improvedapparatus that the unsterilized liquid will soil the sterilized liquid.Consequently the improved apparatus insures absolute security whateverbe the pressure under which the liquids circulate. Moreover, thisarrangement enables the apparatus to be easily inspected and cleaned,since it is only necessary to remove the plates t' in order to see theinterior of the two passages.

The improved apparatus can be employed for exchanging the temperaturesof two fluids of any kind. It can even comprise a larger number ofpassages. In this case it is only necessary to roll a number of sheetsof metal equal to the desired number of passages.

The form, dimensions, and detail arrangements of the improved apparatuscan obviously be somewhat varied according to the different applicationsthereof.

I claiml. A temperature-exchanging apparatus, comprising a cylindricalmember provided with two non communicating spirally-disposed passages,each of a width substantially commensurate with the length of saidcylindrical member, one of said passages being normally open at one endof said cylindrical member and the other of said passages being normallyopen at the other end of said cylindrical member, detachable plates forengaging the ends of said cylindrical members,

thereby closing said passages at said ends, 5o and means for AadmittingIiuids to said passages and for permitting the escape of the sametherefrom.

2. A temperature-exchanging device, comprising a cylindrical memberprovided with 5 5V a plurality of spirally-disposed non-communicatingpassages, each of a width substantially commensurate with the length ofsaid cylindrical member, one of said passages beingnormallyopenthroughout its entire length 6o at one end of said cylindrical memberand the other of said passages being normally open throughout its entirelength at the other end of said cylindrical member, detachable platesfor engaging the ends of said cylindrical members,thereby closing saidpassages at said ends, and means for admitting iiuids to said passagesand for permitting the escape of the same.

3. Atemperature-exchanging device, com- 7o prising a cylindrical memberprovided with a plurality of spirally-disposed non-communicatingpassages, each being of a width substantially commensurate with thelength of said cylindrical member, one of said passages being normallyopen throughout its entire length at one end of said cylindrical member,and the other of said passages being normally open throughout its entirelength at the other end of said cylindrical member, detachable 8o platesfor engaging the ends of said cylindrical members thereby and closingsaid passages at said ends, means for admitting iiuids to said passagesand for permitting the escape of the same, and a substantiallycylindrical core coaxial with said cylindrical member and provided withtwo tubular passages parallel with the axis of said member, said tubularpassages communicating separately with said spirally-disposed passages.9o

The foregoing specification of myimprovements in temperature-exchangingapparatus signed by methis 21st day of November, 1901.

JOSEPH DESMAROUX. Witnesses EDWARD P. MACLEAN, MAURICE Il. PIGNET.

